The price for their information or distribution is dropping towards marginal cost, which is close to zero and typically does not cover full cost.

供应商的信息售价或传播价格正在下跌，趋于边际成本，而边际成本则接近零，而且一般都不能负担全部成本。

youdao

How do we deduce the joint distribution from marginal distribution of each component?

如何从各个分量的边际分布推出其联合分布哪？

youdao

The presupposition of water rights transaction is distribution differentiation of space-time, non-equilibrium of supply-demand and marginal return rate differentiation of water rights owners.

水资源时空分布的差异性、供求的不均衡性和水权主体边际资源回报率的差异，是水权交易制度存在的前提和基础。

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Changes in marginal income tax rates are not accompanied by quantitatively and directionally similar changes in the distribution of income taxes paid by various income level groups.

FORBES: The Fiscal Cliff Is Built On A Mountain Of Ignorance